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Note 3 - Share Information (Tables)
9 Months Ended
Sep. 30, 2013
Earnings Per Share [Abstract]  
Schedule of Weighted Average Number of Shares [Table Text Block]
Earnings per share have been calculated using the following share information:

Quarters Ended
September 30,
 
Nine Months Ended September 30,

2013
 
2012
 
2013
 
2012
Weighted average number of common shares used for basic EPS
38,672,441

 
39,285,484

 
38,836,276

 
39,253,373

Effect of dilutive stock options and restricted and deferred stock unit awards
398,932

 
319,745

 
392,349

 
306,241

Weighted average number of common shares and dilutive potential common stock used in dilutive EPS
39,071,373


39,605,229


39,228,625


39,559,614